Radical Reactions
This is the term for a process where substances change into new substances.
What is a chemical reaction?
The number of forces that act upon an airplane in flight
What are four forces?
Most students added this product to help distribute the weight in their rocket
What is Play-Doh?
Tearing paper or melting ice are examples of this kind of change.
What is a physical change
These are the starting substances in a chemical reaction (before any changes occur).
What are reactants?
This force pulls objects toward Earth.
What is gravity (or weight)
Name and explain two design changes that could reduce drag on a rocket.
Elliptical fins, smooth surface, or a parabola or hemisphere-shaped nose cone.
These are changes that affect the form of a chemical substance (how it looks), but not its composition (what it is made from)
What is a physical change?
In the reaction
2H₂O₂ → 2H₂O + O₂
what kind of chemical reaction is taking place?
What is a decomposition reaction?
This force opposes motion (opposite direction of travel) through the air and slows things down.
What is drag?
Newton's 3rd Law
What is "For every action, there is an equal and opposite reaction"?
What helpful word can we use to remember if a chemical change has occurred? Give examples
FLASH - fizz, light, aroma, shade and heat
When iron switches places with copper in a solution, as seen in our penny lab where we coated a steel nail/clip with a thin layer of copper, what type of reaction is this?
What is a replacement reaction?
In our paper airplane lab, your arm provided the plane with this type of force
What is thrust?
When water pushes downward during the bottle rocket launch, what is the upward response/force called?
What is thrust?
You place a beaker of water on a hot plate on low. Is this a chemical change or physical change?
Physical change
In the Elephant Toothpaste lab, you observed an increase in temperature and release of gas during a reaction.
What are the other 3 ways we can see if a chemical reaction occured?
What are a color change, light produced, smell or aroma change, and formation of a solid (precipitate).
This force is the result of air being pushed down by airplane wings as the plane is propelled in one direction.
What is lift?
Your rocket went off course and wobbled in flight! What might have caused this? Include 2 reasons.
What are:
Poor fin alignment
Nose cone imbalance
Too much drag
You mix red and blue food coloring into water, and it turns purple. What kind of change is this?
Physical change